Turbine or centrifugal vacuum pump device



May "29, 1923. 1,457,121

' J. D. MUDGE TURBINE 0R CENTRIFUGAL VACUUM PUMP DEVICE Fied 000. 121919 a nomto'c #122126 AZ. Mag 9e Gite anus wmra Patented May 29, 1923.

' lTED TEES "PAT EN r r ce.

JAMES 1). MUDGEQOIESEATTLE, wAsHmeTomnmQ rs; munenamvrrnrsraa rarx orwill have if SAID JAMES DEMU GE, DEQEASED."

To-:aBrNnoa CENIRIFUGAL VACUUM ruivrr nnvron? I I Application filed0ct0bcr113,. 1919.:. Serial name.

To all wko m tt mdy co hce rn: I Belit known that'I, JAMES D. MUDcE',;a

citizen ofthe United States residing at Seattle, inthe ,county of King aand State of Washington, have invented alcertain new and useful Turbineor Centrifugal Vacuum Pump ;D.evice,--.ofwhichi'the following 1s aspecification. 5 My invention relates -to theart of turbine. orcentrifugal vacuum. pumps and more particularly pertains to theautomaticallymaintaining ofthe constant seal for the suction openingsin-the runners of said My j invention will befdescribed for purposes of.illustration asapplied in. a, vacuum heating system, but it is not to belimited in its scope to any. such specialapplication. Indevicesasheretoforedesigned for sa d purposes objection 'obtainsin] that saidpumps become choked on account of the lack of flexibility orrangeofoperation, or saidpumps are defective in not having a sufiicientsupply of liquidat all times present to properlyseal the suctionopenings.

These objections pertain especially to centrifugal pumps used in saidconnection. In the case ofreciprocal-pumps ser1ous ob ection obtains tothe great vibration .and

noise developed therefrom and 1 these .fea- 1 tures are particularly tobe avoided in heating systemsfor {buildings or, dwellings. Such vacuumpumps. used in connection with heating systems mustbe capable. at timesof' discharginga quantity of water relatively. large as compared to the.normal discharge, which wide range of discharge; is madeimperativeat'timeswhen a largecon densation. of steam takesplace thruoutthe heating system. It is essential that. the

runner openings of the centrifugal pump meralsindicate like I abovementionedgeneralhobjects my'invention, together with others inherent.

in the same-are obtained by the mechanism illustrated same-being merelya preferred exemplary Iform 'ofembodiment offmv invention,

in the following drawingsyythe,

thruoutwhich drawings likereferencanu- F1gure l, a view inverticalsection.

F 2, ;is a'jview section on line2, 2ofz centrifugal turbine pump 3 hasafldisand valve being surrounded'by. the di schargeichamber 6, having a.vapor or gas relief valve 37 near its top, which-valve is floatoperated. A receiving tank 8 .isconnectedtosaid discharge chain be r bymeans of the conne'ctingpipe 9 havopening, in the receiving tank at v11.- An outlet pipe 12,the.. -inlet of which is prefer ablypositionedabove the floor. ceiving tank, .is ;-pro vided for said tankand discharge pipe non-condensable charge pipe 4, in the top of which.discharge pipe is a check valve-5, said lng the check valve 1'0, saidconnecting pipe maycommunicateeithery with a sewer or with a. boilerfeed l1ne,-;.a--pu1np 13;being connected tosaid discharge or outlet pipeto act upon the liquid. in said pipe 121 A valvelet .in-said dischargeoroutlet pipe l1ne 12 serves to. maintain the reduced pres-CGlViIIgQtaDk -S. A second; outlet pipe 15 extends from,saidf'receivingtank {8 to -the' pump 3 Said second. outlet pipel5 is'preftion 16. and,said outlet portion; is preferably sure ,conditionabove the liquidinjthe ire- I erably provided. with a reduced outlet POI":

disposed, within a returnpipe 17,1onythe same, of the-receiving tank. lAcheckvalve 1 8 is or near the -same level'with the floor 1 providedwithin said second outlet pipe-15. ipe 19 .establlshes communication;between the, return tank 8. '1

' l The operation of.: rny device is as follows:

or inlet pipe 17 and thefreceiving. l

Gases, liquidsand' non-condensable vapors "enter the devicethru-theQreturn pipe[1-7 that enters the pump- 3, which inturndischargesthe same 'thru; the discharge pipe ife cing open; thecheckvalve '5- andcansing, said liquids,v gases, and non-condensable "vapors to accumulatewithin the, discharge chamber pressurexof the liquid becomes. so {greatthat er e 'b 'l i s r n e f-wei h Ope d 6: until. such. a.;ti me.asthe 1check valve lficausing the-liquidsto flaw intot'he receiving't'alik 8.The "air, non-concondensable vapors and gases, escape from :t-hedisch"-arge chamber :6 when the liquids fill the discharge chamber'8tosucha level that the float relief valveis unseated by said liquids. -7 7As said pump 3 operates, it produces a partial vacuum in the ret'urii-orinlet P pe 17, thereby aiding the force of gravity to cause all liquidsconta-ined therein to descend and said liquids thereby normallyfiunctionto seal the suction openings inthe runners ofthe vacuum pump 3 Howeverwhen the level'oft'he liquids in the return pipe '17 falls lie'loiv thelevel of theliqiiid'siii the receiving 'taiik"8,-'the liquids inthere'ceiving tank are caused to flow thruthie sec'ondoutlet pipers tomaintain the supply of liquid as a seal for pump 3, thereby the liquidsin the receiving tank constitute a reserve supply'to 'f'uhctionas a sealfor thepurhp'. Whenever thesup'ply by condensation is inadequate forsuch purposes, a check valve 18 manifestly prevents the liquid fromreaching theiecei-V- ing tan'k 8 by means o'f pipe 15. 'Conrrecting pipe19 maintains the sa1ne'air pre'ssure or degree of vacuum in'th'ereceiving tank as obtainsin the returner inlet pipe 17, so that theliquid contained fvv'i'thin the receiving tank is'fre'e to'seek itslevel withinsaid pipe 17 so far as the pressures 'obtainingin'said pipe1 and the said receiving tank 8 are concerned. v

The function of pump 13 is-t'o pumpth'e liquid from the outlet ordischarge pipe 12. This pumping being obviously necessary in 'v'ierv ofthe fact that the pressure en the liquid at the end of the outlet pipe12 is at least equal to that of the atmosphere, While the-pressureabovethe liquid in "theTece'iV ing tank's is very 10w, being a'par'ti'al vacuum equalto that in the return pipe 17 Check valve 14serves "to maintain the reduced ressure condition in the receiving tank8. Pipe'QOISerVe's to draW- oiiany air that may accumulate in'thepipe'9. I

Obviously changes may bem'ade in the forms, dimensions, and arrangementof the parts of my invention Without "departing from' the'prinoiplethereof, the abovesetti'n'g forth only a referred form oi'embddinient.

'I claim:

1. A device of the class described embodying an inlet 'or return pipe,av 'ciuun pum tie pump fluids and liquids out 0i said return pi'pe, a'discharge pipe for" 'saidpump, a check valve in said discharge pipe, 2dischar e chamber "encldsin g "the "outlet 'ofl's'aii'd discharge pipe,a vap'e'r or as relief valve for said-discharge chamber, a receiving"tank, a connecting pip-e between said discharg chamber and saidreceivin taiik, 'a fch'eck valve in said ebnnefi irg pip a nutlet it for"said fete-Wing tank, "se'cen'd pufiip to act upon the liquids iiisaid-outlet pipe, a check valve in the discharge outlet'ot said lastnamed pump, a second outlet pipe for said receiving tank connecting saidreceiving tank and: said first named pump, and a pressure ad ust1ng pipeconnecting said 111- iet or 'r'etuzcn ipipe =and said receiving tank.

2. A device of the class described embodyingan inlet er 'r e'tuan pipe,a vacuum pump to pump fluids and liquids out of said return pipe, adischarge "p'ip'e for said pump, a check "valve in said discharge pipe,a discharge "chamber enclosing the outlet of said discharge pipe, avapor "or gas relief) valve for said discharge chamber, a receivingtank, a connecting pipe betive'en said discharge chai'nberand saidreceiving tank, a

pressure adjusting valve in said connecting pipe disp'os'ed't'o'opei'ateat a predetermined pressure, outlet-pi e for said receivingtank, said "outlet pi )e extending for some "distance above the our ofsaid receiving tank, a second pump to act upon theliquids in said outletpipe, a check valve in theodischarge outlet of said last named pump, a

, 'se'c'o'nd outlet pipe conneetingsai'd --receivii1'g tank and saidfirst named pump, a check valve disposed in said second outlet pipe,said second outlet pipe extending within said return'pip'e, andapressure adjusting 'pipe connecting said return pipe "and saidi'ecelvmg tank.

a. Adevic'e of the cla s described emboay ing an'inlet 'or return pipe,a vacuum ump to pump fluids and liquids'out of said return pipe, a"discharge pip for said pump, a 'check valve in said discharge "pipe, adischarge chamber 1 enclosingthe outlet "of said discharge pipe, at'vapdr or'gas relief valve for said 'dischargec-hanib'er, a receivingtank,

a connecting *pipe between said discharge chamber and said receivingtank, a pressure adjusting valve in said connecting pipe disposed tooperate at a "predetermined pressurefan outlet' ipe for said receivingtank, saictoutiet pipe extending fo'i so'rne distance aloiive the flo'orof said receivin tank, a secondpunip to act upon-the liquids in saidoutlet pipe, a second valve the discharge outlet of said last named um asecond outlet pipe connecting said receivingtaiik and said first named"pump, ache'ck disposed insaid secondfoutlet pi'pe, said sseona utletp'p'e'eitehdii within sea-a returne ipaa pres'sur aitju stifngpi eonnectinfg said return pipe'ahdsaid receivingtank, and a pipe iqm ing acqminunicating I paseaw y beate h "said .lifi' s di j 'n' a heien a ngPipe wet saidkdischarge chamber and said receivm'g tan- 4 In witness eaear i rmit subscribe my name this'tith da'y oi; Oct, A. D.-, 191 9'.

